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真正的三维地震反射勘探指炮检距和方位角均匀分布的一组炮-检对来观测每个地下反射段。常规的海上三维是假三维,其炮—检方位角被严格限制在围绕放炮方向的很小的范围内。虽然对二维和假三维处理来说,叠前部分偏移已成为一种工业标准,但至今已发表的算法要用于真正三维勘探仍有一些距离,叠前部分偏移的许多目标可通过形成真正的共反射点叠加来达到,真正的共反射点叠加则是以由数据导出的对地下倾角和速度的数据分析为基础的。本方法已成功地应用于二维、假三维和真三维地震反射资料的处理中。
REAL 3D SEISMIC REFLECTION EXPLORATION A set of cannon-check pairs with a uniform offset and azimuth angles is surveyed to observe each subsurface reflection section. Conventional maritime three-dimensional is a fake three-dimensional, its cannon-test azimuth is strictly limited in the direction of shot around a very small range. Although prestack partial migration has become an industry standard for two-dimensional and pseudo-three-dimensional processing, so far the published algorithms have some distance to be used for true 3D exploration and many of the pre-stack offset targets can be passed The formation of a true co-reflection point stack to achieve, the real total reflection point overlay is derived from the data derived from the underground dip and velocity data analysis based. The method has been successfully applied to the processing of two-dimensional, fake three-dimensional and three-dimensional seismic reflection data.